alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox botnet C2 traffic (url - confidence level: 75%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/"; depth:1; nocase; http.host; content:"vek.vi-ler.dk"; depth:13; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1800942/; target:src_ip; metadata:confidence_level 75, first_seen 2026_04_27; classtype:trojan-activity; sid:91800942; rev:1;)